2) (a) One "teaspoon of sugar" corresponds to 4.0 g (grams) of sugar.Calculate the energy content (in Joules) of this amount of sugar if 1.0 g of sugar corresponds to an energy of 4.1 calories (4.1 cal). It is given that 1 cal = 4.18kJ. (b) If the human body could completely convert the energy content of food into mechanical work, calculate the height at which a person (mass 65 kg) who consumes a "teaspoon of sugar" could climb. (c) If this man falls freely from this height, calculate the speed at which he willland on the ground?